Fruit-jar closure.



G. THALER.

' FRUIT IAR CLOSURE. V APPLICATION man 1m31. 1914. nENEwED DEC. 2, |915.

Patented Apr. 11, 1916.

WIT/VESSES UNITED STATES PATENT-Ormea.

GSTAVTHALER, 0F OAKLAND, CALIFORNIA.

rRUIT-JAR oLosURE.Y

Specication of Letters Patent. Patented Apu 11, 19.16;-

Application inea January 31,v 1914, serial No. 815,608. RenewedDeeemiierai', 1915. serial ne. 58,921.

To all whom z't'mwy concern Be it known that I, GUsTAv TIHALER, acitizen of the UnitedStates, residing at Oakland, in the county ofAlameda and State of California, have invented certain new and usefulImprovements in Fruit-J ar Closures, of which the following is aspecification. y

This invention relates to improvements 1n fruit jar closures, which maybe adapted to any of the ordinary type of jars.

The principal object of my invention is to provide a seal which iseasily applied and removed.

A second object of my invention is to .provide a nonmetallic closure andso prevent corrosion by' 'contact with the fruit acids.

vA further object 1s to provide a cheap and lsanitary cover, which willbeused but once Yand then discarded.

With these and other objects in view my invention consists in the novelarrangement .and combination of parts as herein 'describediand pointedout inthel appended claims.

For a full comprehension of the invention reference should be had to thedrawing forming a part of the specification wherein,

Figurel is a verticalsectionof a jar witha screw 'cap and having mydevice applied thereto. Fig. 2 is a top plan view with the screw capremoved. Fig.. 3 is a fragmentary vertical sectional View showing thejar top sealed andthe applying device removed.

Denoting corresponding parts by the same numerals, 1, is the jar bodyhaving the neck shown in threaded engagement with the jar neck it willbeunderstood that 'any .other means of securing it thereto, whichw'illresist an upward pull will sufiice, as the securing of this top in noway affects the sealing of the jar. I

To effect the sealing vof the jar I provide a gasket 7 having thecircular center disk 8, around the periphery of which is formed theupstanding wall 9, and which lits snugly within theneck 2. At the top is'a laterally extending rimA 10 ada tedl to rest on top of neck 2. Thisgasket i) may be of any suit'- able material, 'but` in practice I'use astiff paper heavily coated with a wax like substance, especially on theside adjacent the 15 f through portion 2, and in the form here shownscrew" Vnexed claims.

with the central conical portion 12, the 11pstanding annular flange 13adapted to fit within the wall 9 of thegasket, and the lateral rim 14resting on the rim 10 ofthe gasket.

The cap4 I4- is provided with a ,screw threaded hole in alinement withthe apex of the .conical disk 12. Through this hole isl threaded. ascrew l16 having a head 17 by which it may be readily turned. Extendingfrom the 'center of this disk is a radial 'slot the conical center 12the upstanding flange 13 and the lateral rim 14. Thus when pressure isapplied tothe apex of the conical portion the tendency is to open thecone and press the Harige 13 outwardly.

In use, after placing the articles to be preserved within the j ar thegasket 8 is applied with the rim l0 resting on the top of the neck 2.The compression member l1 is then placed over the gasket and the cap 4fastened to the jar, in this case by screwing it thereon. Screw 16 isnext turned to bring the point thereof into contact with the apex neckand the heat of the contents meltsthe wax-like substance and firmlyholds the gas ket to the glass, this action being also as-` sistedby thevacuum within thejar. .When

the contents cool the cap 4 and compression member 11 may be removedleaving the-jar,

sealed as shown in Fig. 3, and to open it is only necessary to cut outthe disk 8`with a knife or other sharp instrument. Thus ity will be seenI have provided an effective device for the purpose mentioned `and whileI have shown the preferred embodiment of` myV invention I wish toinclude all such VInodinca-tions and changes in form and detail asproperly fall within the scope of the an- What I claim and ters Patentis 1. A container comprising a body, a cap, a compressible gaskettherebetween covering wish to cover by Letthe entire mouthofsaid'contaner, a convex disk between said cap and sai gasket, a` slit.in said disk to allow the lateral expansion of the edges thereof, andscrew means in said cap to Hatten said disk and `force the edges downand outwardly.

2. A container comprising a body a cap, and a gasket therebetween, aconvex disk be.-A tween s'aid gasket and said Cap, said'disk havl ing anannular'ange, aV lateral rim, a radial slit, screw means carried by saidCap adapted to press against' said convex disk therebyl I squeezing thesaid gasket between said flange 10 and the inner wall of said neck andbetween said rim and top edge of said neck.

In testimony whereof I alix my signature in presence of two witnesses.

- GUSTAV THALER.

Witnesses L F. P. SGHR'GEDER, R. M. OYARZQ.

